Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace
Само за регистроване кориснике
2020
Аутори
Milicević, AleksandarBelošević, Srđan V.
Crnomarković, Nenad
Tomanović, Ivan
Tucaković, Dragan
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In this paper pulverised lignite-fired 350 MWe boiler furnace is selected for numerical simulations performed by using in-house developed computer code to deepen understanding of complex processes during direct co-firing with wheat straw. The CFD code is significantly upgraded to accommodate simulation of lignite and wheat straw particle reactions and interactions with gas phase, and to allow analysis of particle behavior under real conditions inside the furnace. Parametric analysis is done with emphasis on the thermal share, size and shape of biomass particle, method of biomass feeding into the furnace and the fuel distribution over the burner tiers. In the most favorable co-firing case (with 10% of wheat straw thermal ratio and particle diameter of 500 mu m), the higher furnace exit gas temperature for 8 degrees C and lower NOx emission of 18.2% are achieved, compared with pure lignite combustion case. The optimal co-firing case provides relatively low percentage of wheat straw parti...cles falling into the hopper (9.57%) and relatively high mass burnout of biomass particles at the furnace outlet (91.81%). Non-spherical shape of wheat straw particles is found to affect the fuel trajectories and flame significantly. The results of parametric analysis could support implementation of biomass co-firing technology in existing coal-fired power plants, to increase energy efficiency and mitigate environmental pollutants.
Кључне речи:
Utility steam boiler / Pulverised coal / Numerical study / Mathematical modelling / Co-combustion / BiomassИзвор:
Applied Energy, 2020, 260Издавач:
- Elsevier Sci Ltd, Oxford
Финансирање / пројекти:
- Повећање енергетске и еколошке ефикасности процеса у ложишту за угљени прах и оптимизација излазне грејне површине енергетског парног котла применом сопствених софтверских алата (RS-MESTD-Technological Development (TD or TR)-33018)
DOI: 10.1016/j.apenergy.2019.114206
ISSN: 0306-2619
WoS: 000515108700083
Scopus: 2-s2.0-85077222376
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Milicević, Aleksandar AU - Belošević, Srđan V. AU - Crnomarković, Nenad AU - Tomanović, Ivan AU - Tucaković, Dragan PY - 2020 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3271 AB - In this paper pulverised lignite-fired 350 MWe boiler furnace is selected for numerical simulations performed by using in-house developed computer code to deepen understanding of complex processes during direct co-firing with wheat straw. The CFD code is significantly upgraded to accommodate simulation of lignite and wheat straw particle reactions and interactions with gas phase, and to allow analysis of particle behavior under real conditions inside the furnace. Parametric analysis is done with emphasis on the thermal share, size and shape of biomass particle, method of biomass feeding into the furnace and the fuel distribution over the burner tiers. In the most favorable co-firing case (with 10% of wheat straw thermal ratio and particle diameter of 500 mu m), the higher furnace exit gas temperature for 8 degrees C and lower NOx emission of 18.2% are achieved, compared with pure lignite combustion case. The optimal co-firing case provides relatively low percentage of wheat straw particles falling into the hopper (9.57%) and relatively high mass burnout of biomass particles at the furnace outlet (91.81%). Non-spherical shape of wheat straw particles is found to affect the fuel trajectories and flame significantly. The results of parametric analysis could support implementation of biomass co-firing technology in existing coal-fired power plants, to increase energy efficiency and mitigate environmental pollutants. PB - Elsevier Sci Ltd, Oxford T2 - Applied Energy T1 - Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace VL - 260 DO - 10.1016/j.apenergy.2019.114206 ER -
@article{ author = "Milicević, Aleksandar and Belošević, Srđan V. and Crnomarković, Nenad and Tomanović, Ivan and Tucaković, Dragan", year = "2020", abstract = "In this paper pulverised lignite-fired 350 MWe boiler furnace is selected for numerical simulations performed by using in-house developed computer code to deepen understanding of complex processes during direct co-firing with wheat straw. The CFD code is significantly upgraded to accommodate simulation of lignite and wheat straw particle reactions and interactions with gas phase, and to allow analysis of particle behavior under real conditions inside the furnace. Parametric analysis is done with emphasis on the thermal share, size and shape of biomass particle, method of biomass feeding into the furnace and the fuel distribution over the burner tiers. In the most favorable co-firing case (with 10% of wheat straw thermal ratio and particle diameter of 500 mu m), the higher furnace exit gas temperature for 8 degrees C and lower NOx emission of 18.2% are achieved, compared with pure lignite combustion case. The optimal co-firing case provides relatively low percentage of wheat straw particles falling into the hopper (9.57%) and relatively high mass burnout of biomass particles at the furnace outlet (91.81%). Non-spherical shape of wheat straw particles is found to affect the fuel trajectories and flame significantly. The results of parametric analysis could support implementation of biomass co-firing technology in existing coal-fired power plants, to increase energy efficiency and mitigate environmental pollutants.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Applied Energy", title = "Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace", volume = "260", doi = "10.1016/j.apenergy.2019.114206" }
Milicević, A., Belošević, S. V., Crnomarković, N., Tomanović, I.,& Tucaković, D.. (2020). Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace. in Applied Energy Elsevier Sci Ltd, Oxford., 260. https://doi.org/10.1016/j.apenergy.2019.114206
Milicević A, Belošević SV, Crnomarković N, Tomanović I, Tucaković D. Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace. in Applied Energy. 2020;260. doi:10.1016/j.apenergy.2019.114206 .
Milicević, Aleksandar, Belošević, Srđan V., Crnomarković, Nenad, Tomanović, Ivan, Tucaković, Dragan, "Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace" in Applied Energy, 260 (2020), https://doi.org/10.1016/j.apenergy.2019.114206 . .